Federal Mogul 810M-20 Main Bearings .020 1949-1955 Cadillac 331 V8 NORS

Genuine Federal Mogul 810M-20 Main Bearings Set .020" Undersize (NORS)

Restore the stability of your classic Cadillac engine with this genuine Federal Mogul 810M-20 Main Bearings Set (.020" Undersize). This is a vintage New Old Replacement Stock (NORS) part, manufactured in the USA. It features high-quality vintage materials that provide superior durability and correctness compared to modern stiff overseas reproductions.

This part is designed for the Crankshaft Main Journals position on specific 1949-1955 Cadillac vehicles equipped with the 331 CID V8 engine.

Key Features:

• Part Number: 810M-20 (Federal Mogul)
• Interchange Part: 810M20, 4663M20
• Position: Engine Crankshaft Main Bearings
• Engine Fitment: 331 CID V8 (OHV)
• Origin: Made in USA (Vintage Stock)
• Condition: NORS (New Old Replacement Stock)

Verified Vehicle Fitment:

Fits Years:

1949 1950 1951 1952 1953 1954 1955

Product Note: Vintage Stock Photos

This listing uses stock images for reference. Because these are NORS (New Old Replacement Stock) parts manufactured decades ago, the item you receive may have cosmetic differences from the photo, such as:

• Packaging: Box styles, colors, or condition may vary (or item may be bulk packed).
• Finish: Materials, colors, or plating may vary between production runs.
• Shelf Wear: Minor cosmetic signs of age are normal for vintage parts.

Rest assured, the Part Number (810M-20) and Fitment specifications are verified to be 100% correct for the vehicles listed.

Unbeatable Prices & Expectations

We scour the country to find the best deals on NOS and NORS parts so we can pass the savings on to you. Our prices are often significantly lower than major competitors.

Please Note: While we verify fitment to the best of our ability using vintage catalogs, there can be variations. We strongly recommend comparing our photos and specs to your original part before purchasing.